“Speckled Wart Lichens”: {Astrothelium sp.}

Astrothelium (aka “Speckled Wart Lichens”) see “Trypethelium”

Identification Characteristics

Description: Tropical crustose lichens, with thin, continuous thalli largely within bark tissue. Photobiont green (Trentepohlia); perithecia clustered & buried in yellow or orange warts (pseudostromata) as in Trypethelium; perithecia with several chambers but joining at the apex & opening to the surface by a single asiole; spores colorless, narrowly ellipsoid to fusiform, with gelatinous halo, 4-10-celled with lens-shaped locules, turning blue with IKI in some species.